On the nature of the effective gauge field in the neutral superfluid

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF02397683· OSTI ID:569766

Nepomnyashchy, Y A ^[1]

---

1. Technion, Haifa (Israel)

The idea of the fluctuation emergence of the gauge field in the neutral superfluid is stated and discussed in a series of papers. Previous authors suppose the emergence of the gauge field trying to develop a theory of the superfluid motion beyond the Hartree-liquid motion. They get some corrections to the space and time derivatives in the equation for the condensate wave function f = {Psi} = <{cflx {Psi}}> as the first-order contribution of the quantum fluctuations to the Gross-Pitaevskii equation. Considering these corrections as a gauge field they suppose a self-energy term of the field of the simplest (quadratic) form in the action with phenomenological parameters. These authors note that the corrections to derivatives {open_quotes}play the role similar to that of the vector and scalar potentials coupled to a complex matter field, and the formulation thus closely resembles the Landau-Ginzburg equation of superconductivity coupled to the electromagnetic field{close_quotes}. The author goes on to consider the nature of this gauge field.

• Sponsoring Organization: USDOE
• OSTI ID: 569766
• Journal Information: Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 5-6 Vol. 108; ISSN JLTPAC; ISSN 0022-2291
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
FIELD THEORIES
GAUGE INVARIANCE
SELF-ENERGY
SUPERFLUIDITY